	US 7,595,352 B2
	Photo-curable adhesive composition, optical pick-up device using the same, and optical recording/reproducing drive including the optical pick-up device
Young-se Choi, Suwon (Korea, Republic of); Hyung-tae Kim, Seoul (Korea, Republic of); Do-hoan Nam, Suwon (Korea, Republic of); Soo-han Park, Youngin (Korea, Republic of); Dovid Azrielevich Aronovich, Nizhegorodskaya obl. (Russian Federation); Valentin Vasilievich Guzeev, Nizhegorodskaya obl. (Russian Federation); Vladimir Borisovich Mozzhukhin, Nizhegorodskaya obl. (Russian Federation); Alexandr Petrovich Sineokov, Nizhegorodskaya obl. (Russian Federation); Natalya Alexandrovna Ustyuzhantseva, Nizhegorodskaya obl. (Russian Federation); and Zyakia Saibasakhovna Khamidulova, Nizhegorodskaya obl. (Russian Federation)
Assigned to Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do (Korea, Republic of)
Filed on May 24, 2006, as Appl. No. 11/439,430.
Application 11/439430 is a continuation of application No. PCT/RU03/00517, filed on Nov. 24, 2003.
Prior Publication US 2007/0054975 A1, Mar. 08, 2007
Int. Cl. C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08J 3/28 (2006.01)

U.S. Cl. 522—95 [522/90; 522/96; 522/13; 522/24; 522/81; 522/83; 522/173; 523/223; 524/783; 524/786; 524/787; 524/789; 156/275.5; 156/275.7; 156/331.7; 428/355 N; 428/355 AC; 428/355 R; 428/356]

16 Claims

1. A photo-curable adhesive composition, comprising:

an oligourethane (meth)acrylate in a range of about 11 to about 23% by weight;

a reactive monomer-diluent in a range of about 11 to about 24% by weight;

a silicate filler in a range of about 50 to about 65% by weight;

a photoinitiator in a range of about 2.5 to about 5.0% by weight;

an organic peroxide in a range of about 0.1 to about 0.5% by weight;

a thixotropic agent in a range of about 0.5 to about 3.5% by weight;

an antioxidant in a range of about 0.005 to about 0.02% by weight;

a silane finishing agent in a range of about 0.1 to about 2.5% by weight; and

oxalic acid in a range of about 0.5 to about 1.5% by weight, based on the total weight of the composition, wherein:

the oligourethane (meth)acrylate is a mixture of oligooxyalkyleneurethane methacrylate and oligobutadieneurethane methacrylate in a mass ratio in a range of about 1:1 to about 4:1.